Manually actuated cable hoist



0ct. 13, 1953 R. MALLORY 2,655,342

MANUALLY ACTUATED CABLE HoIsT Filed Feb. e, 1951 2 Sheets-Sheet 1 ,5INVENTOR.

L25 /ay Ma//arg ATTCI RN EYB Oct. I3, 1953 R. MALLORY MANUALLY Ac-ruATEDcABLE HoIsT 2 Sheets-Sheet 2 Filed Feb. 6, 1951 ATTU RN EYS PatentedOct. 13, `-1953 UNITED STATES PATENT OFFICE Claims. (Cl. 25k-'1135) Thisinvention relates to hand lever actuated hoisting devices particularlyadapted Vfor carrying heavy objects uppvertically disposed cables suchas power shovel cables, and inparticular a :hoist positioned on a cable,with a lever pivotally mounted intermediate ofthe ends thereof and withoppositely disposed gripping jaws mounted in the ends and positioned togripA the cable, and with means for actuating the grippingljaws by thelever whereby as the hand lever is forced downwardly the hoist movesupwardly on the `cable and as thehand lever is moved upwardly ingtravelers particularly on horizontally disposed tracks, however', suchdevices are not adapted for carrying tools and other heavy ob' jects upcables particularly of powershovels' and the like. With this thought inmindr this invention contemplates a traveler formed to be positionedupon a cable with gripping jaws in the ends and with a lever pivot'allymounted between the ends for actuating the gripping jaws c and travelerwhereby as theI lever is actuated the traveler moves upwardly on thecable. A

The object of this inventionvis', therefore, to provide means forforming av hoist whereby upon operation of a hand lever pivotally'mounted thereon the hoist crawls upwardly on a cable for carrying toolsand the like; thereon.

Another object of the invention is toi provide a manually actuated hoistfor carrying tools and the like up cables that mayY bel used withoutchanging the cableor without permanently attaching parts thereto.

A further object ofthe invention is to provide a manually actuatedelevating device for carrying objects upwardly on cables andthelike'which is' of a simple and economical construction.

With these and other objects andadvar'itages in view the inventionembodiesA a oasingsubstantially U-shaped in cross sectionuwi'thoppositely disposed gripping jaws pivotally mounted in the ends of thecasing, a traveling carriage on which vone. of said jaws is mounted.. ahand lever pivotally mounted on the' casing and o'ositior'ied` ataconnecting the hand Alever to the carriage in 'which one of the grippingjaws is pivotall'y `mounted and meansactuating the gripping jaws by thehand lever for alternately gripping the cable.

Other features and advantagesI of tlj'le ii'ivr'itio'n will appear fromthe following description taken 'in connection with the drawingswherein:

Figure 1 is a side elevational view showing the improved hoisting`device with part of the hand lever broken away;

Figure 2 is a vertical longitudinal section through the device WitlitlihandA lev'ei` shown in the lower position-.- i

Figure 3 is a front elevational View of the hoisting device.- o Y YFigure 4 is a detail illustrating a clev'is at the lower end of thedevice to which tools and other objects may be attached.

Fig-ure 51s a detail showing an endlevatiorial View o al slider carriedby 611e of the gripping jaw` mounting' elements. o plli'igure 6 is aplan` View of the slider shownin Figure 'i is aplan or' end elevationalview ofi the upper gripping' jaw mounting elements with the slidernormally positioned on the outer end thereof.,` and'` other partsomitted. i

YFigure 8 is an end elevational view showing onev or the cable grippingjaws.

Figure 9 is end elevational view showing the sliding` carriage inlwhichV the lower gripping jaw isi pivotally' mounted Figure- 10 is a'detail` showing a plan view of the inner end of the hand lever and withythe hoist `casing andI otherpartsY omitted;

Referring now to the drawings wherein like Vreference charactersderrotecorresponding parts the improved` cable hoist of this' inventionirlc'ludes an elongated casing or' shoe IIJ,- U-shape in `crosssection;V a hand' lever H1, pivotally' .mounted on the shoe through armst2 and l3 with aV pin r4 an upper gripping jaw` i5,- a lower grippingjaw |.e,.as1idiiigoarriage i1 which the gripping jaw f6` is pivotallymounted by' a pirr i8', a rocker arm te, positioned on ai pin It' bywhich the gripping jaw pivotaliy" riiotinted,` and' connecting rodsl z|`and 22 for connecting the gripping actuating elements to acontrol shaft23 which extends through the hand lever I I.

(The -shoe lUeXtends" continuously f'ro'rll` a point 24l at the upperend to a point ze forming the lower endend the' interino' rate portionpro'- ,vioeir witiiian enlarged section it* throughwhich the pin or boitf4 extends. The lower end ofthe 3 shoe is provided with a clevis 21 bywhich tools and other objects or devices are suspended from the shoe.

The upper end of the shoe is provided with a U-shape yoke havingparallel arms 28 and 29 at the outer ends and the arms are provided withflanges 30 and 3I, respectviely.

The upper gripping jaw I5 is provided with an inner arcuate end in whichthe gripping teeth are positioned. The teeth of the jaw I5, which areindicated by the numeral 32 are positioned to grip a cable 33 as thecable moves upwardly through the shoe and as the shoe moves upwardly onthe cable the teeth are held downwardly by the hand lever I I, asillustrated in Fig. 2. The hand lever is connected to the jaw I5 by therod 2I which extends through an opening 34 in an end 35 of the shaft 23,and the upper end of the rod 2| is connected to the inner end of therocker arm I9, the end 36 of the rod extending through an opening 31 inthe rocker arm, and being held in the rocker arm by a cotter pin 38. Therod 2I is provided with clamps 39 and 4I) that provide stops, beingpositioned on opposite sides of the end 35 of the shaft, and the clampsare provided with screws 4I and 42, respectively, as shown in Fig. 3.

I'he gripping jaw I5 is resiliently held upwardly by a spring 43, theupper end of which is held on a pin 44 on the under side of the jaw andthe lower end of which is held in a split hanger formed with arcuatesections 45 and 46. A head 41 having a pin 48 on the upper end forholding the end of the spring is secured between the sections 45 and 46with a pin 49.

The outer end of the rocker arm I9 is pivotally connected to a slider5I) which, as shown in Figs. 5 and 6 is provided with flanges 5I and 52that extend around flanges 30 and 3| on the yoke formed with the sideplates 28 and 29. The

slider is provided with an arm 53 having a socket 54 in the lower endand a link 55 connects the rocker arm to the slider with the lower end56 thereof held in the socket 54 by a cotter pin 51 with ther upper end58 held in an opening 59 in the end of the rocker arm by a cotter pin69. The slider is provided with an opening 6I through which the outerend of the jaw I5 extends, as illustrated in Fig. 2 and as the inner endof the rocker arm is drawn downwardly by the hand lever I I the outerend moves upwardly drawing the slider 50 upwardly through the link 55,and thereby moving the outer end of the jaw I5 upwardly. As illustratedin Fig. 2 the lower edge of the jaw I5 engages the upper end of the arm53 so that as the slider moves upwardly it forces the outer end of thegripping jaw upwardly as the opposite or gripping end thereof movesdownwardly so that the teeth 32 move away from the cable 33. By the samemeans as the hand lever II is moved upwardly the inner end of the rockerarm moves upwardly with the outer end moving downwardly, whereby theinner end of the gripping jaw is free to be urged upwardly by the spring43. Upon upward movement of the hand lever II the upper end of the shoeI0 grips the cable and the carriage I1, which carries the lower jaw I6is drawn upwardly to take another bite.

The carriage I1 is slidably mounted in the shoe II) and this is alsoU-shape in cross section having flanges 62 and 63 on the outer edgesupon which a slider, similar to the slider 50, is positioned. The socket54 of the lower slider is connected by the rod 22 to the shaft 23 withthe rod 4 passing through an opening 64 in an end 65 of the shaft, andthe rod 22 is also provided with clamps 66 and 61 that are adjustablymounted on the rod by screws 68 and 69. The lower end 10 of the rod 22is secured in the socket 54 of the slider by a cotter pin 1I.

The lower gripping jaw I6, which is provided with teeth 12 is pivotallymounted in the carriage I1 by a pin I8 and the lower edge is providedwith a notch 13 that is positioned to receive the upper end of the arm53 of the slider 50. The lower edge of the jaw I6 is also provided witha pin 14 over which the upper end of a spring 15 is positioned and thelower end of the spring is held by a head 16 having a pin 11 on theupper end in a split hanger having substantially semicircular sections18 and 19, which extends downwardly from the lower end of the carriage,and in which the head 16 is secured by a pin 80. The lower end of theshoe I0 is provided with a cotter pin 8| that extends through the sidesthereof, as shown in Fig, 3 to limit downward movement of the carriageI1.

The upper end of the carriage I1 is provided with extensions 82 and theextensions are secured to the hand lever II by links 83, the lower endsof which are attached to the extensions 82 of the carriage by a bolt 84and the upper ends of which are secured between the arms I2 and I3 ofthe hand lever by a bolt 85.

It will be noted that as the hand lever II is moved downwardly, to theposition shown in Fig. 2, the rod 22 actuates the slider 50 whereby theouter end of the gripping jaw I6 is moved downwardly with the oppositeor inner end moving upwardly so that the jaw grips the cable, and withthe jaw gripping the cable, the bolt 85 forms a pivot point with thebolt or pin I4 moving upwardly so that the shoe II) is carried upwardlyon the cable.

As the hand lever II reaches the limit of Vthe downward movement andstarts upwardly the gripping jaw I5 is actuated into gripping relationwith the cable to hold the shoe in the upper position and the grippingjaw I6 is released from the cable so that the carriage I1 moves upward-1y in the shoe.

The shaft 23 which actuates the rods 2| and 22 extends through elongatedslots 86 and 81 in the arms I 2 and I3, respectively of the hand leverand the intermediate part of the shaft is connected by a bar 88 to aU-shape lever 89 at the outer end of the tubular section of the handlewhereby a cam surface of the lever 89 rides on the end of the handle andas the lever 89 is drawn outwardly to a horizontal position the shaft 23moves to the outer ends of the slots thereby changing the positions ofthe rods 2| and 22 so'that the movement of the gripping jaws may bereversed to reverse the direction of the travel of the shoe or hoist onthe cable. A spring 9i is provided on the bar 88 to return the shaft 23when the lever 89 is turned downwardly to the position shown in Fig. land the end of the bar 88 is mounted in the sides of the lever 89 by asplit pin 92.

With the parts as shown in Figure 2, the gripping jaws I5 and I6 areactuated by the lever II whereby the upper jaw I5 grips the cable andholds the device in position as the carriage I1 in which the lower jawI6 is mounted is drawn upwardly with upward movement of the lever II;whereas to lower the device on the cable the shaft 223 is drawnoutwardly to the outer ends of the slots 86 and 81 by the lever 99 withthe reacuesta 'suit that the rod 2l through `the rocker arm I9 raisesthe upper slider 50 and rod 22 moves the lower slider 60 downwardly.

In the position of moving the hoist upwardly the pin 23 and the ends orpins 36 and III of the rods 2 I and 22 are, substantially, in a straightline whereas with the pin 23 drawn outwardly to the outer ends of the.slots 88 and 81 the three points form a triangle whereby, asillustrated in Figure 2, the inner end of the rocker arm I9 is drawndownwardly with the pin 23 moved to the outer ends of the slots 86 and81.-

Moving the inner end of the rocker arm I9 downwardly from the positionshown in Figure 2, moves the outer end of the jaw I upwardly therebymoving the opposite renrl of the jaw downwardly, and with the shorterradius from the teeth 32 to the pin 20 at the upper side of the jaw,the. jaw is released from the cable, .whereby with the conditionsreversed in relation to the jaw I6 the jaw I6 grips the cable permittingthe shoe to slide downwardly by the weight of a tool or the like on theclevis 21. With upward movement of the lever II the jaw I5 will againgrip the cable permitting the carriage I1 with the jaw I6 to slidedownwardly to grip the cable at lower point.

With the parts arranged in this manner a cable, as indicated by thenumeral 33 is inserted through the shoe, as illustrated in Fig. 2 andwith a tool or other object carried by the clevis 21 the hand lever IIis moved downwardly forcing the gripping jaw I6 into engagement with thecable, as shown in Fig. 2 and at the same time forcing the shoe upwardlyon the cable with the pin I 4 moving upwardly from the pin 85 whichprovides the fulcrum. In this movement the carriage I'I remainsstationary on the cable with the shoe sliding upwardly over thecarriage. As the lever II reaches the limit of its downward movement theaction is reversed with the lever I I moving upwardly whereby thegripping jaw I5 is actuated into gripping relation with the cable. Thegripping jaw I5 holds the shoe on the cable so that the pin 85 movesupwardly drawing the carriage II, the carriage sliding upwardly throughthe shoe. At the end of the upward movement of the lever I I the actionis reversed as the lever II moves downwardly the gripping jaw I6 takesanother bite and forces the shoe with the weight or tool suspendedtherefrom upwardly on the cable.

Downward movement of the carriage I'I in the shoe is limited by the pin8I and to hold the carriage in alignment in the shoe the lower end isprovided with an extended sleeve 93 the inner side of which is providedwith a split 94 and a similar sleeve 95 with a split 96 therein extendsupwardly `from the upper end of the yoke 28,

It will be understood that modifications may be made in the design andarrangement of the parts without departing from the spirit of theinvention.

What is claimed is:

1. A cable hoist comprising a cable, an elongated shoe. U-shape in crosssection positioned on the cable, a gripping jaw pivotally mounted in theshoe, spaced from the upper end thereof and positioned to grip thecable, a carriage also U-shape in cross section slidably mounted in thelower part of the shoe, a gripping jaw pivotally mounted in the carriageand positioned to grip the cable, a hand lever pivotally mounted on theshoe and positioned between the said gripping jaws. means connecting thegripping jaws to the Alever whereby .upon reciprocation 'of the leverthe shoe travels on the cable, and `means reversing the position of thegripping jaws to reverse the direction of travel of the hoist on thecable.

2. In a cable carrier, the combination which comprises a cable, :an`elongated shoe, U-shape in cross `section positionedon the cable, ayoke. U- shape in cross section,`mounted in the upper .end of theshoe,'acarriage also U-shape in cross section yslidably mounted in thelower part of the shoe, capable gripping jaws pivotally Vmounted in rtheyoke :and carriage, sliders mounted on the yoke land carriage and`positioned to actuate the gripping. jaws, a hand lever pivotallyVmounted on the shoe and positioned between the yoke and carriage,"alink connecting the lever to the carriage, andV means actuating thesliders `by the lever. i

l:1b-In' 'a vcable rhoist.: .the Vcombination which comprises anelongated shoe, U-shape in cross section, a cable extended through theshoe, a yoke, also U-shape in cross section mounted in the upper end ofthe shoe. a carriage, also U- shape in cross section slidably mounted inthe lower part of the shoe, gripping jaws pivotally mounted in the yokeand carriage, respectively, sliders slidably mounted on extended ends ofthe yoke and carriage and having slots therein through which outer endsof the gripping jaws extend, a lever mounted on the shoe and positionedbetween the yoke and carriage, links pivotally connecting the lever tothe carriage, a shaft transversely positioned in the lever and slidablymounted therein, means actuating the shaft from the outer end of thelever, and means pivotally connecting the shaft slidably mounted in thelever to the gripping jaws for actuating the jaws to alternately gripthe cable.

4. In a cable hoist, the combination which comprises an elongated shoe,U-shape in cross section and having a clevis carried by the lower end, ayoke U-shape in cross section mounted in the upper end of the shoe, acarriage also U-shape in cross section slidably mounted in the lowerpart of the shoe, transversely disposed shafts pivotally mounted in theyoke and carriage, respectively, cable gripping jaws pivotally mountedthrough the said shafts of the yoke and carriage. springs positioned inthe yoke and carriage for urging the inner ends of the cable grippingjaws upwardly, sliders having openings therethrough through which thegripping jaws extend slidably mounted on extended ends of the said yokeand carriage, respectively, a rocker arm mounted on the shaft positionedin the yoke, means pivotally connecting an extended end of the rockerarm to the slider slidably mounted on the yoke, a hand lever pivotallymounted on the shoe and positioned between the yoke and carriage, ashaft slidably mounted in the lever and having ends extended from thesides thereof, a bar connecting one end of the shaft to the inner end ofthe said rocker arm, a bar connecting the opposite end of the shaft withthe slider slidably mounted on the carriage, links connecting the leverto the carriage, and means actuating the shaft extended through thelever from the outer end of the lever.

5, In a cable hoist, the combination which comprises an elongated shoe,U-shape in cross section and having a clevis carried by the lower end, ayoke U-shape in cross section mounted in the upper end of the shoe, acarriage also U- shape in cross section slidably mounted in the lowerpart of the shoe, tranversely disposed 'shafts vpivotally mounted in theyoke "and, carriage, respectively, cable gripping jaws pivotally mountedthrough the said shafts of the yoke and carriage, springs positioned inthe yoke and carriage for urging the inner ends ofthe cable grippingjaws upwardly, sliders having openings -therethrough through which thegripping jaws extend slidably mounted on extended ends of the said yokeand carriage, a rocker arm mounted on the shaft positioned in the yoke,means` pivotally connecting an extended end of the rocker arm to theslider slidably mounted on the yoke, a hand lever pivotally mounted onthe shoeand positioned between the yoke and carriage, a shaft slidablymounted in the lever and having ends l extended from the sides thereof,a bar connecting one end of the Vshaft to the inner end of the saidrocker arm, a bar connecting the opposite end of the shaft with theslider slidably mounted on the carriage, 'links connecting thelevertothe earriage, means actuating the shaft extended through thelever from the outer end of the lever, and stops adjustably mounted onthe rods connecting the extended ends of the shaft to the rocker arm andslider, respectively, and positioned on opposite sides of the extendedends of the shaft for adjusting the movement of the gripping jaws.

10 VROY MALLORY.

References Cited in the le of this patent UNITED STATES PATENTS ,15Number Name Date '752,621 Huerth et al. Feb. 16, 1904 1,231,014 GoodwillJune 26, 1917 Y 1,473,150 Johnson Nov. 6, 1923 1,920,686 Faure Aug. 1,1933

